It's an 8 core big.LITTLE board based off the XU-4, so it can certainly move. In terms of CPU performance it's only slightly behind the 6 core RK3399 and S922X based boards, probably mostly because it's a 32 bit processor. Pretty much only the memory benchmarks and GPU performance are where it falls short. Some benchmarks from Odroid to give you an idea.

I sold my Vive a while back so I can't check if they've fixed it 'til I get the Index, but yeah, I kept running into an issue where when I quit SteamVR and left the Vive connected, the Vive would still be set as the default audio output for everything, and other times when I started it up it never would get set in the first place so I'd have no sound without tinkering with it. I found a thread here about someone discovering that that was because of Nvidia Display Audio breaking the switching feature, so I removed the driver for that, and sure enough, switching started working again. Annoyingly, every Nvidia driver installer tries to reinstall it if you use Quick Install.